Dan Castellaneta

Homer Simpson / Kodos / Krusty the Clown / Sideshow Mel (voice)

Julie Kavner

Marge Simpson / Patty Bouvier / Selma Bouvier / Jacqueline Bouvier (voice)

Nancy Cartwright

Bart Simpson / Nelson Muntz / Maggie Simpson / Ralph Wiggum / Kearney Zzyzwicz / Rod Flanders/ (voice)

Yeardley Smith

Lisa Simpson (voice)

Hank Azaria

Kirk Van Houten / Moe Szyslak / Comic Book Guy / Gary Chalmers / Snake Jailbird / Professor Frink (voice)

Harry Shearer

Principal Skinner / Kang / Lenny Leonard / Reverend Lovejoy / Rainier Wolfcastle / Ned Flanders (voice)

Hugh Bonneville

Narrator (voice)

Pamela Hayden

Milhouse Van Houten / Jimbo Jones / Todd Flanders(voice)

Tress MacNeille

Dolph Shapiro / Various Kids at Oceanland (voice)

Kevin Michael Richardson

Morgan Freeman / Narwhal Wrapped in Plastic (voice)

Grey Griffin

Martin Prince / Üter Zörker (voice) (as Grey DeLisle)

Alex Désert

Carl Carlson (voice)

Chris Edgerly

Additional Voices (voice)

Dawnn Lewis

Bernice Hibbert / Ursula(voice)

Maggie Roswell

Helen Lovejoy / Luann Van Houten (voice)